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Veldkamp R, D'hooge M, Sandroff BM, DeLuca J, Kos D, Salter A, Feinstein A, Amato MP, Brichetto G, Chataway J, Farrell R, Chiaravalloti ND, Dalgas U, Filippi M, Freeman J, Motl RW, Meza C, Inglese M, Rocca MA, Cutter G, Feys P. Profiling cognitive-motor interference in a large sample of persons with progressive multiple sclerosis and impaired processing speed: results from the CogEx study. J Neurol 2023; 270:3120-3128. [PMID: 36881147 DOI: 10.1007/s00415-023-11636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/15/2023] [Accepted: 02/19/2023] [Indexed: 03/08/2023]
Abstract
BACKGROUND Performing cognitive-motor dual tasks (DTs) may result in reduced walking speed and cognitive performance. The effect in persons with progressive multiple sclerosis (pwPMS) having cognitive dysfunction is unknown. OBJECTIVE To profile DT-performance during walking in cognitively impaired pwPMS and examine DT-performance by disability level. METHODS Secondary analyses were conducted on baseline data from the CogEx-study. Participants, enrolled with Symbol Digit Modalities Test 1.282 standard deviations below normative value, performed a cognitive single task ([ST], alternating alphabet), motor ST (walking) and DT (both). Outcomes were number of correct answers on the alternating alphabet task, walking speed, and DT-cost (DTC: decline in performance relative to the ST). Outcomes were compared between EDSS subgroups (≤ 4, 4.5-5.5, ≥ 6). Spearman correlations were conducted between the DTCmotor with clinical measures. Adjusted significance level was 0.01. RESULTS Overall, participants (n = 307) walked slower and had fewer correct answers on the DT versus ST (both p < 0.001), with a DTCmotor of 15.8% and DTCcognitive of 2.7%. All three subgroups walked slower during the DT versus ST, with DTCmotor different from zero (p's < 0.001). Only the EDSS ≥ 6 group had fewer correct answers on the DT versus ST (p < 0.001), but the DTCcognitive did not differ from zero for any of the groups (p ≥ 0.039). CONCLUSION Dual tasking substantially affects walking performance in cognitively impaired pwPMS, to a similar degree for EDSS subgroups.
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Affiliation(s)
- R Veldkamp
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium.
- UMSC, Hasselt-Pelt, Belgium.
| | - M D'hooge
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
- UMSC, Hasselt-Pelt, Belgium
- National MS Center Melsbroek, Steenokkerzeel, Belgium
| | - B M Sandroff
- Kessler Foundation, East Hanover, NJ, USA
- Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - J DeLuca
- Kessler Foundation, East Hanover, NJ, USA
- Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - D Kos
- National MS Center Melsbroek, Steenokkerzeel, Belgium
- Department of Rehabilitation Sciences, KU Leuven, Leuven, Belgium
| | - A Salter
- Department of Neurology, Section on Statistical Planning and Analysis, UT Southwestern Medical Center, Dallas, TX, USA
| | - A Feinstein
- Department of Psychiatry, University of Toronto and Sunnybrook Health Sciences Centre, Toronto, ON, M5R 3B6, Canada
| | - M P Amato
- Department NEUROFARBA, Section Neurosciences, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
- IRCCS Fondazione Don Carlo Gnocchi, Florence, Italy
| | - G Brichetto
- Scientific Research Area, Italian Multiple Sclerosis Foundation (FISM), Via Operai 40, 16149, Genoa, Italy
- AISM Rehabilitation Service, Italian Multiple Sclerosis Society (AISM), Via Operai 30, 16149, Genoa, Italy
| | - J Chataway
- Queen Square MS Centre, Department of Neuroinflammation, University College London (UCL) Queen Square Institute of Neurology, Faculty of Brain Sciences, UCL, London, UK
| | - R Farrell
- Queen Square MS Centre, Department of Neuroinflammation, University College London (UCL) Queen Square Institute of Neurology, Faculty of Brain Sciences, UCL, London, UK
| | - N D Chiaravalloti
- Kessler Foundation, East Hanover, NJ, USA
- Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - U Dalgas
- Exercise Biology, Department of Public Health, Aarhus University, Dalgas Avenue 4, 8000, Aarhus, Denmark
| | - M Filippi
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, and Neurology Unit, IRCCS, San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - J Freeman
- School of Health Professions, Faculty of Health, University of Plymouth, Devon, UK
| | - R W Motl
- Department of Kinesiology and Nutrition, University of Illinois Chicago, Chicago, IL, USA
| | - C Meza
- Department of Psychiatry, University of Toronto and Sunnybrook Health Sciences Centre, Toronto, ON, M5R 3B6, Canada
| | - M Inglese
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - M A Rocca
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, and Neurology Unit, IRCCS, San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - G Cutter
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, USA
| | - P Feys
- REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Hasselt, Belgium
- UMSC, Hasselt-Pelt, Belgium
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Van Schependom J, D'hooghe MB, Cleynhens K, D'hooge M, Haelewyck MC, De Keyser J, Nagels G. The Symbol Digit Modalities Test as sentinel test for cognitive impairment in multiple sclerosis. Eur J Neurol 2014; 21:1219-25, e71-2. [PMID: 24850580 DOI: 10.1111/ene.12463] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 04/07/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Cognitive impairment (CI) is found in about half of the multiple sclerosis (MS) population and is an important contributor to employment status and social functioning. CI is encountered in all disease stages and correlates only moderately with disease duration or Expanded Disability Status Scale scores. Most present neuropsychological test batteries are time-demanding and expensive. The Symbol Digit Modalities Test (SDMT) has been suggested as a screening tool for CI in MS. In this paper, we aim to assess the performance of the SDMT in predicting the outcome of an extensive battery. METHODS Neuropsychological test results from 359 patients were assessed in a multidisciplinary MS center (National MS Center Melsbroek, Belgium). Using receiver operating characteristic curves, the performance of the SDMT in predicting the general cognitive outcome of the extensive Neuropsychological Screening Battery for MS (NSBMS) could be assessed. The performance of the SDMT was assessed for different levels of CI and compared with other cognitive tests. Finally, useful covariates were included in a logistic regression model. RESULTS At a specificity of 0.60 a high sensitivity (0.91) was obtained indicating the potential of the SDMT as a sentinel test for CI in MS. The SDMT outperformed the individual tests included in the NSBMS, used as benchmark. As the logistic regression model did not result in a relevant improvement, it is concluded that most clinical variables influence both the SDMT and the NSBMS in a similar way. Excluding patients with possible practice effects, an optimal cutoff of 40 was found for the SDMT. CONCLUSION As the SDMT is an easy, low-cost and fast test, this result may help to detect CI in everyday clinical practice.
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Affiliation(s)
- J Van Schependom
- Department of Neurology, Center for Neurosciences, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium; Faculte de Psychologie et des Sciences de l"Education, Mons, Belgium
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